ENERGY STORAGE APPARATUS, METHOD FOR OBTAINING BATTERY STATE OF HEALTH VALUE, AND BATTERY MANAGEMENT SYSTEM

This application provides an energy storage apparatus, a method for obtaining a battery state of health value, and a battery management system. The energy storage apparatus, the method for obtaining the battery state of health value, and the battery management system may be used in an application scenario, for example, a data center power supply, a station backup power supply, an in-vehicle power supply, or a photovoltaic power supply, in which a battery is in a float charging state or a shallow charging and shallow discharging state for long time. The energy storage apparatus includes a battery control unit, a battery monitor unit, and a plurality of cells. The battery control unit is configured to receive a battery state of health SoH value estimation model from a cloud device, and the battery monitor unit is configured to obtain an estimated SoH value of a first cell based on a real-time equivalent circuit model parameter of the first cell in the plurality of cells and the battery SoH value estimation model. According to the energy storage apparatus disclosed in this application, a battery SoH value is estimated by using an artificial intelligence model, and deep charging and discharging do not need to be performed or a battery, so that the battery SoH value can be accurately obtained in a plurality of application scenarios, and a battery capacity abnormality risk can be identified in advance, thereby improving stability of an energy storage system.